CIESC Journal

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对二甲苯和醋酸二元液体混合物在不同温度下的超额摩尔体积、粘度和热容

杨长生; 马沛生; 唐多强; 尹秋响; 赵长伟   

  1. State Key of C1 Chemistry and Technology, School of Chemical Engineering and Technology,
    Tianjin University,Tianjin 300072, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-10-28 发布日期:2002-10-28
  • 通讯作者: 杨长生

Excess Molar Volume, Viscosity and Heat Capacity for the Binary Mixture of p-Xylene and
Acetic Acid at Different Temperatures

YANG Changsheng; MA Peisheng; TANG Duoqiang; YIN Qiuxiang; ZHAO Changwei   

  1. State Key of C1 Chemistry and Technology, School of Chemical Engineering and Technology,
    Tianjin University,Tianjin 300072, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: YANG Changsheng

摘要: Experimental densities, viscosities and heat capacities at different temperatures were
presented overthe entire range of mole fraction for the binary mixture of p-xylene and
acetic acid. Density values were used in thedetermination of excess molar volumes, VE. At
the same time, the excess viscosity and excess molar heat capacitieswere calculated. The
values of VE, ηE and cpE were fitted to the Redlich-Kister equation. Good agreements
wereobserved. The excess molar volumes are positive with a large maximum value located in
the central concentrationrange. The excess viscosity has an opposite trend to the excess
molar volume VE. ηE values are negative over theentire range of the mixture. The cure of
dependence of cEp on concentration has a special shape. The molecularinteraction between p
-xylene and acetic acid is discussed.

关键词: viscosity;heat capacity;density;excess molar volume;molecular interaction

Abstract: Experimental densities, viscosities and heat capacities at different temperatures were
presented overthe entire range of mole fraction for the binary mixture of p-xylene and
acetic acid. Density values were used in thedetermination of excess molar volumes, VE. At
the same time, the excess viscosity and excess molar heat capacitieswere calculated. The
values of VE, ηE and cpE were fitted to the Redlich-Kister equation. Good agreements
wereobserved. The excess molar volumes are positive with a large maximum value located in
the central concentrationrange. The excess viscosity has an opposite trend to the excess
molar volume VE. ηE values are negative over theentire range of the mixture. The cure of
dependence of cEp on concentration has a special shape. The molecularinteraction between p
-xylene and acetic acid is discussed.

Key words: viscosity, heat capacity, density, excess molar volume, molecular interaction